[FS#316] Make LEDE possible to build with recent stable openssl/libssl 1.1.0c

[LEDE Bugs]

The following task has a new comment added:

FS#316 - Make LEDE possible to build with recent stable openssl/libssl 1.1.0c
User who did this - Jo-Philipp Wich (jow-)

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Please refer to FS#182
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=316#comment986